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CVE-2026-80916 kcov: fix data corruption and race conditions on PREEMPT_RT

🗓️ 09 Sep 2026 16:13:14Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 33 Views

Data corruption in Linux kernel kcov on PREEMPT_RT from nested softirq overwriting per-CPU state.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/linux/sched.h",
      "kernel/kcov.c",
      "lib/Kconfig.debug"
    ],
    "versions": [
      {
        "version": "5ff3b30ab57da82d8db4f14662a2858cabfbc2c0",
        "lessThan": "ef7048d8a614c5f5a9b20513a5428101a744514e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5ff3b30ab57da82d8db4f14662a2858cabfbc2c0",
        "lessThan": "8ed3ddf23d39bf5338406bd9f8863d44748cf6ce",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5ff3b30ab57da82d8db4f14662a2858cabfbc2c0",
        "lessThan": "5dc59fc959b2b5742985d7ef24bccd1868217dc2",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5ff3b30ab57da82d8db4f14662a2858cabfbc2c0",
        "lessThan": "a2fb8222cde23b0001812ed3acb7c0ea36dd94e2",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5ff3b30ab57da82d8db4f14662a2858cabfbc2c0",
        "lessThan": "18799e858b407bf355383c9dd6c06477aa437134",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5ff3b30ab57da82d8db4f14662a2858cabfbc2c0",
        "lessThan": "e11f5b48c82703242a3be7a7ae4b4940b4cb4610",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5ff3b30ab57da82d8db4f14662a2858cabfbc2c0",
        "lessThan": "22670d1552fe155822b2abf91f920925f7d067b4",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5ff3b30ab57da82d8db4f14662a2858cabfbc2c0",
        "lessThan": "f8c9a3ec36b4ee3d4701b9be08f40e7bfbf89761",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5ff3b30ab57da82d8db4f14662a2858cabfbc2c0",
        "lessThan": "2eed77fdcb0cc48e8eccb2bcd4b7f2c6d650e84c",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/linux/sched.h",
      "kernel/kcov.c",
      "lib/Kconfig.debug"
    ],
    "versions": [
      {
        "version": "5.8",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.8",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.269",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.220",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.185",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.154",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.106",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.47",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.11",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.1",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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